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tbobM116 proofs are on thinner paper than cards in the regular set and blank backed but they are black and white, not in color.
Go ahead, lay me out again boys. I wish the proofs in this set were the color blank backed cards as I have a McQuillan, Cinn. the rarest card in the set, with that combo. PSA said it was authentic but wouldn't grade it because it was handcut.